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130998687 = 3191228619
BaseRepresentation
bin1111100111011…
…10000110011111
3100010111102102020
413303232012133
5232013424222
620555431223
73150320241
oct763560637
9303442366
10130998687
1167a44286
1237a55513
13211a8221
1413580091
15b77965c
hex7cee19f

130998687 has 8 divisors (see below), whose sum is σ = 175580160. Its totient is φ = 86874840.

The previous prime is 130998667. The next prime is 130998689. The reversal of 130998687 is 786899031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130998687 - 28 = 130998431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130998689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113737 + ... + 114882.

It is an arithmetic number, because the mean of its divisors is an integer number (21947520).

Almost surely, 2130998687 is an apocalyptic number.

130998687 is a deficient number, since it is larger than the sum of its proper divisors (44581473).

130998687 is a wasteful number, since it uses less digits than its factorization.

130998687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228813.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 130998687 is about 11445.4657834446. The cubic root of 130998687 is about 507.8736110130.

The spelling of 130998687 in words is "one hundred thirty million, nine hundred ninety-eight thousand, six hundred eighty-seven".

Divisors: 1 3 191 573 228619 685857 43666229 130998687